XML 47 R35.htm IDEA: XBRL DOCUMENT v3.20.2
Investments - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 6 Months Ended
Feb. 29, 2020
Jun. 30, 2020
Feb. 01, 2020
White Cliffs      
Schedule of Equity Method Investments      
Ownership percentage (percent)   3.33%  
Advantage      
Schedule of Equity Method Investments      
Ownership interest, equity method (percent)   50.00%  
Delaware Crossing      
Schedule of Equity Method Investments      
Ownership interest, equity method (percent)   50.00%  
Capital contributions   $ 16.9  
EPIC Y-Grade      
Schedule of Equity Method Investments      
Ownership interest, equity method (percent)   15.00%  
Capital contributions   $ 12.8  
EPIC Crude      
Schedule of Equity Method Investments      
Ownership interest, equity method (percent)   30.00%  
Capital contributions   $ 30.0  
EPIC Propane      
Schedule of Equity Method Investments      
Ownership interest, equity method (percent)   15.00%  
Capital contributions   $ 4.0  
Saddlehorn      
Schedule of Equity Method Investments      
Ownership percentage (percent)   20.00%  
Capital contributions $ 160.0    
Payments to acquire equity method investments, net 87.0    
Greenfield Member | Saddlehorn      
Schedule of Equity Method Investments      
Capital contributions $ 73.0    
Black Diamond | Saddlehorn      
Schedule of Equity Method Investments      
Ownership percentage (percent)     10.00%
Magellan and Plains | Saddlehorn      
Schedule of Equity Method Investments      
Ownership percentage (percent)     30.00%
Black Diamond and Western Midstream | Saddlehorn      
Schedule of Equity Method Investments      
Ownership percentage (percent)     20.00%